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ATLANTA, Ga. - At least one of the two American aid workers who were infected with the Ebola virus in Africa was to be discharged Thursday from an Atlanta hospital, a spokeswoman for the aid group he was working for said.

Alison Geist, a spokeswoman for Samaritan's Purse, told The Associated Press she did not know the exact time Dr. Kent Brantly would be released but confirmed it would happen Thursday.

Meanwhile, Franklin Graham, president of Samaritan's Purse, said in a statement that Brantly has recovered.

"Today I join all of our Samaritan's Purse team around the world in giving thanks to God as we celebrate Dr. Kent Brantly's recovery from Ebola and release from the hospital," Graham's statement said.

Brantly and Nancy Writebol were flown out of the west African nation of Liberia earlier this month and have been getting treatment for the deadly disease in an isolation unit at the hospital. The two were infected while working at a missionary clinic outside Liberia's capital.

The Ebola outbreak has killed 1,350 people and counting across West Africa.

On Wednesday in Liberia, slum residents clashed with riot police and soldiers who used scrap wood and barbed wire to seal off 50,000 people inside the slum in an effort to contain the outbreak.

The World Health Organization said the death toll is rising most quickly in Liberia, which now accounts for at least 576 of the fatalities. At least 2,473 people have been sickened across West Africa, which is now more than the caseloads of all the previous two-dozen Ebola outbreaks combined.

Ebola is only spread through direct contact with the bodily fluids of sick people experiencing symptoms.

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.